Aux cable connects to devices that don't feature Bluetooth and lets you use your headset if the battery dies  Cushioned, over-ear design reduces ambient noise while providing comfort for extended usage  Designed for portability with a collapsible headband and ear cups that fold in for storage and travel  Conveniently control volume, music tracks, and phone calls with on-headset controls  Headset automatically connects to the last device paired via Bluetooth  Keep your day moving with up to a 12-hour battery life  A rechargeable, wireless Bluetooth headset perfect for your on-the-go life